Challenge

Week - 4

CONTROL LOGIC BY MATLAB

AIM:The aim is to implement control logic of a “washing machine” using Stateflow.

OBJECTIVE:

If the power supply is available, the system gets activated

MODEL OF WASHING MACHINE:

This is done in Simulink by using chart.
As per given conditions our washing machine model is prepared as seen in above picture.
Washing machine will have five stages like watering,soaking,washing,rinsing,drying.
At the begining when the power is on watering will takes place and the process continues in the given time.
In our model when p==1 the power is on, when p==0 power is off.
In same manner w==1 watering is on,when w==0 watering is off.
As per given condition soaking is done for 200 sec, so from soaking to washing time is taken as after 200 sec.This is written as after(200,sec) in matlab syntax.
Washing time is 100 sec.So the time between washing and rinsing is taken as 100sec.
In the same manner rinsing and drying is taken.
We need to give input and output data for the state to run.
The input and output data are given.

here input datas are the value of p and w.The output datas are remaining data.

A constant blocks are given as input data and output data is displayed in the display block.
The constant is taken as one in all the cases.
When constant value one is given as input data which is power,then the circuit runs and gives the output power value as 1.
Same pattern follws for every case.
Lamps are connected to the output data,i.e if the value display one then the lamp is turned on.
After all the process is completed the led light turns on in RED colour.

WHEN POWER IS ON AND WATER IS ON:

WHEN POWER IS ON AND WATER IS ON(Started filling):

WHEN SOAKING PROCESS TAKES PLACE:

WHEN WASHING PROCESS TAKES PLACE:

WHEN RINSING PROCESS TAKES PLACE:

WHEN DRYING PROCESS TAKES PLACE:

WHEN ENTIRE PROCESS IS COMPLETED:

GEAR SHIFT IN SIMULINK:

OBJECTIVE:

Speed Range(kmph) Gear

0 to 15 1

16 to 25 2

26 to 40 3

41 to 60 4

Above 61 5

LOGIC:

The logic behind this chart is,when the input is greate than 0 the gear changes to 1 from nutral position.
When the input is greater than 0 the gear changes to 1.
When the input is greater than 15 the gear changes to 2.When the input is between 0-15 the gear is 1.
When the input is greater than 25 the gear changes to 3.When the input is between 15-25 the gear is 2.
When the input is greater than 40 the gear changes to 4.When the input is between 25-40 the gear is 3.
When the input is greater than 60 the gear changes to 5.When the input is between 40-60 the gear is 4.

The input value is taken as input and G value is taken as output.
Input is a constant of any value.Output is G value i.e gear value maximum value is 5.